./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac61a60e8702da390cdc74b87fa3424e0fd152a4ccfcd2c9fd7af24a4bb7ac5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:23,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:24,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:12:24,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:24,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:24,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:24,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:24,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:24,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:12:24,072 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:12:24,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:24,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:24,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:24,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:24,075 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:24,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:24,077 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:12:24,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:24,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:24,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:24,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:24,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:12:24,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:24,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:12:24,083 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:12:24,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:24,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:24,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:12:24,089 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:24,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:24,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:24,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:24,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:24,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:24,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:24,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:24,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:12:24,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:12:24,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:12:24,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:24,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:24,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:12:24,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:24,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:24,097 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac61a60e8702da390cdc74b87fa3424e0fd152a4ccfcd2c9fd7af24a4bb7ac5 [2023-11-21 22:12:24,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:24,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:24,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:24,458 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:24,458 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:24,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c [2023-11-21 22:12:27,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:12:27,805 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:12:27,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound50.c [2023-11-21 22:12:27,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/data/f2acf8fa1/b15c01b21869407684d54083d46f2cf3/FLAG3987c2e68 [2023-11-21 22:12:27,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/data/f2acf8fa1/b15c01b21869407684d54083d46f2cf3 [2023-11-21 22:12:27,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:12:27,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:12:27,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:27,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:12:27,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:12:27,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:27" (1/1) ... [2023-11-21 22:12:27,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaeb811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:27, skipping insertion in model container [2023-11-21 22:12:27,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:27" (1/1) ... [2023-11-21 22:12:27,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:28,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:28,065 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:12:28,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:28,105 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:12:28,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28 WrapperNode [2023-11-21 22:12:28,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:28,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:28,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:12:28,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:12:28,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,151 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-21 22:12:28,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:28,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:12:28,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:12:28,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:12:28,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,168 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,180 INFO L187 HeapSplitter]: Split 9 memory accesses to 2 slices as follows [2, 7] [2023-11-21 22:12:28,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:12:28,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:12:28,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:12:28,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:12:28,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:28,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:28,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:12:28,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:12:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:12:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:12:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:12:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:12:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:12:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:12:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:12:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:12:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:12:28,358 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:12:28,361 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:12:28,605 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:12:28,649 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:12:28,650 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:12:28,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:28 BoogieIcfgContainer [2023-11-21 22:12:28,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:12:28,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:12:28,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:12:28,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:12:28,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:12:27" (1/3) ... [2023-11-21 22:12:28,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b68aa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:28, skipping insertion in model container [2023-11-21 22:12:28,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28" (2/3) ... [2023-11-21 22:12:28,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b68aa93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:28, skipping insertion in model container [2023-11-21 22:12:28,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:28" (3/3) ... [2023-11-21 22:12:28,662 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound50.c [2023-11-21 22:12:28,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:12:28,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 22:12:28,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:12:28,747 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b8f2f13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:12:28,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 22:12:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 22:12:28,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:12:28,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:28,758 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:28,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:28,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1203328600, now seen corresponding path program 1 times [2023-11-21 22:12:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265913630] [2023-11-21 22:12:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:12:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:12:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:12:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:12:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:29,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265913630] [2023-11-21 22:12:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265913630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:29,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:29,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:12:29,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768432148] [2023-11-21 22:12:29,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:29,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:29,405 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:12:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:29,561 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2023-11-21 22:12:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:12:29,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-11-21 22:12:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:29,575 INFO L225 Difference]: With dead ends: 72 [2023-11-21 22:12:29,575 INFO L226 Difference]: Without dead ends: 38 [2023-11-21 22:12:29,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:12:29,585 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:29,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-21 22:12:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-21 22:12:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:12:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-11-21 22:12:29,651 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 16 [2023-11-21 22:12:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:29,654 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-11-21 22:12:29,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:12:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-11-21 22:12:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:12:29,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:29,659 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:29,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:12:29,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:29,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1195344561, now seen corresponding path program 1 times [2023-11-21 22:12:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:29,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882033318] [2023-11-21 22:12:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:29,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:29,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091888924] [2023-11-21 22:12:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:29,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:29,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:29,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:29,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:12:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:12:29,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:29,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882033318] [2023-11-21 22:12:29,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091888924] [2023-11-21 22:12:29,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091888924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:29,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:29,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:29,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504985198] [2023-11-21 22:12:29,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:29,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:12:29,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:12:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:12:29,968 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:12:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:30,082 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2023-11-21 22:12:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:12:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-11-21 22:12:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:30,086 INFO L225 Difference]: With dead ends: 44 [2023-11-21 22:12:30,086 INFO L226 Difference]: Without dead ends: 43 [2023-11-21 22:12:30,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:12:30,090 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:30,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 91 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:12:30,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-21 22:12:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-11-21 22:12:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.391304347826087) internal successors, (32), 27 states have internal predecessors, (32), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:12:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-11-21 22:12:30,111 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2023-11-21 22:12:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:30,112 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-11-21 22:12:30,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:12:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-11-21 22:12:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 22:12:30,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:30,116 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:30,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:30,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:30,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:30,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1599024339, now seen corresponding path program 1 times [2023-11-21 22:12:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:30,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868107172] [2023-11-21 22:12:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:30,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:30,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808745674] [2023-11-21 22:12:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:30,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:30,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:30,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:12:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:30,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:12:30,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:30,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:30,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:30,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868107172] [2023-11-21 22:12:30,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808745674] [2023-11-21 22:12:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808745674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:30,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:30,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317427637] [2023-11-21 22:12:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:30,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:12:30,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:12:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:12:30,534 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:12:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:30,659 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2023-11-21 22:12:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:12:30,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2023-11-21 22:12:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:30,661 INFO L225 Difference]: With dead ends: 45 [2023-11-21 22:12:30,662 INFO L226 Difference]: Without dead ends: 44 [2023-11-21 22:12:30,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:12:30,664 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:30,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 86 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-21 22:12:30,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-11-21 22:12:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:12:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-11-21 22:12:30,675 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 25 [2023-11-21 22:12:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:30,676 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-11-21 22:12:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:12:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-11-21 22:12:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 22:12:30,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:30,678 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:30,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:30,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:30,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:30,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1051872212, now seen corresponding path program 1 times [2023-11-21 22:12:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:30,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272356754] [2023-11-21 22:12:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:30,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:30,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309906829] [2023-11-21 22:12:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:30,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:30,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:30,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:30,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:12:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:31,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:12:31,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:31,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:31,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272356754] [2023-11-21 22:12:31,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309906829] [2023-11-21 22:12:31,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309906829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:31,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:31,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:12:31,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475534836] [2023-11-21 22:12:31,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:31,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:12:31,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:31,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:12:31,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:12:31,083 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:12:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:31,197 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2023-11-21 22:12:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:12:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2023-11-21 22:12:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:31,199 INFO L225 Difference]: With dead ends: 84 [2023-11-21 22:12:31,199 INFO L226 Difference]: Without dead ends: 52 [2023-11-21 22:12:31,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:12:31,201 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:31,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 113 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-21 22:12:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-21 22:12:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:12:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2023-11-21 22:12:31,217 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 28 [2023-11-21 22:12:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:31,218 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2023-11-21 22:12:31,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:12:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2023-11-21 22:12:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 22:12:31,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:31,221 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:31,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:31,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:31,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:31,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1822769980, now seen corresponding path program 1 times [2023-11-21 22:12:31,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:31,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565486816] [2023-11-21 22:12:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:31,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:31,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815795662] [2023-11-21 22:12:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:31,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:31,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:12:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:31,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:12:31,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:31,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565486816] [2023-11-21 22:12:31,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:31,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815795662] [2023-11-21 22:12:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815795662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:12:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415784691] [2023-11-21 22:12:31,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:12:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:31,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:12:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:12:31,626 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:12:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:31,809 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2023-11-21 22:12:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:12:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2023-11-21 22:12:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:31,812 INFO L225 Difference]: With dead ends: 52 [2023-11-21 22:12:31,812 INFO L226 Difference]: Without dead ends: 50 [2023-11-21 22:12:31,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:12:31,820 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 51 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:31,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 81 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-21 22:12:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-21 22:12:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:12:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-11-21 22:12:31,834 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 32 [2023-11-21 22:12:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:31,835 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-11-21 22:12:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:12:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-11-21 22:12:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 22:12:31,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:31,836 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:31,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:32,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:32,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:32,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash -671294444, now seen corresponding path program 1 times [2023-11-21 22:12:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404272040] [2023-11-21 22:12:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:32,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:32,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742601750] [2023-11-21 22:12:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:32,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:32,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:32,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:12:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:32,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:12:32,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:32,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:12:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404272040] [2023-11-21 22:12:32,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742601750] [2023-11-21 22:12:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742601750] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:12:32,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:12:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-21 22:12:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698372955] [2023-11-21 22:12:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:32,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:12:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:12:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:12:32,316 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:12:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:32,438 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2023-11-21 22:12:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:12:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-11-21 22:12:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:32,448 INFO L225 Difference]: With dead ends: 63 [2023-11-21 22:12:32,448 INFO L226 Difference]: Without dead ends: 62 [2023-11-21 22:12:32,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:12:32,453 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:32,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 106 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-21 22:12:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-11-21 22:12:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.225) internal successors, (49), 42 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 22:12:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-11-21 22:12:32,485 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 33 [2023-11-21 22:12:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:32,485 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-11-21 22:12:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:12:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-11-21 22:12:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 22:12:32,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:32,488 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:32,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:32,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:32,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:32,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash -671256708, now seen corresponding path program 1 times [2023-11-21 22:12:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958313712] [2023-11-21 22:12:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:32,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:32,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124032534] [2023-11-21 22:12:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:32,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:32,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:32,729 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:32,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:12:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:32,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:12:32,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:32,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:12:32,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958313712] [2023-11-21 22:12:32,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124032534] [2023-11-21 22:12:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124032534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:32,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:32,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-21 22:12:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67149799] [2023-11-21 22:12:32,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:32,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:12:32,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:12:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:12:32,975 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:12:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:33,230 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2023-11-21 22:12:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:12:33,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 33 [2023-11-21 22:12:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:33,234 INFO L225 Difference]: With dead ends: 86 [2023-11-21 22:12:33,236 INFO L226 Difference]: Without dead ends: 85 [2023-11-21 22:12:33,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:12:33,237 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 98 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:33,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 116 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-21 22:12:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-11-21 22:12:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 57 states have internal predecessors, (68), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 22:12:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2023-11-21 22:12:33,260 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 33 [2023-11-21 22:12:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:33,260 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2023-11-21 22:12:33,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:12:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2023-11-21 22:12:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:12:33,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:33,269 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:33,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:33,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:33,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:33,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1754090747, now seen corresponding path program 1 times [2023-11-21 22:12:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:33,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676244957] [2023-11-21 22:12:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:33,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:33,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018232540] [2023-11-21 22:12:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:33,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:33,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:33,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:12:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:33,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:12:33,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:33,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:12:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:33,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676244957] [2023-11-21 22:12:33,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:33,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018232540] [2023-11-21 22:12:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018232540] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:12:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:12:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-21 22:12:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579545748] [2023-11-21 22:12:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:12:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:12:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:12:33,760 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:12:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:33,913 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2023-11-21 22:12:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:12:33,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-11-21 22:12:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:33,915 INFO L225 Difference]: With dead ends: 145 [2023-11-21 22:12:33,915 INFO L226 Difference]: Without dead ends: 88 [2023-11-21 22:12:33,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:12:33,918 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:33,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 132 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-21 22:12:33,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2023-11-21 22:12:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 63 states have internal predecessors, (75), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-21 22:12:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2023-11-21 22:12:33,957 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 37 [2023-11-21 22:12:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:33,958 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2023-11-21 22:12:33,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:12:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2023-11-21 22:12:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:12:33,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:33,960 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:33,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:34,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:34,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1264454355, now seen corresponding path program 1 times [2023-11-21 22:12:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:34,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785203122] [2023-11-21 22:12:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:34,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:34,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613385268] [2023-11-21 22:12:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:34,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:34,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:12:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:34,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:12:34,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:34,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:12:34,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:34,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785203122] [2023-11-21 22:12:34,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:34,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613385268] [2023-11-21 22:12:34,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613385268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:34,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:34,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-21 22:12:34,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063433446] [2023-11-21 22:12:34,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:34,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:12:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:12:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:12:34,441 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-21 22:12:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:34,611 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2023-11-21 22:12:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 22:12:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 37 [2023-11-21 22:12:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:34,615 INFO L225 Difference]: With dead ends: 170 [2023-11-21 22:12:34,615 INFO L226 Difference]: Without dead ends: 113 [2023-11-21 22:12:34,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-21 22:12:34,619 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 51 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:34,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 138 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-21 22:12:34,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2023-11-21 22:12:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 79 states have internal predecessors, (93), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-21 22:12:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2023-11-21 22:12:34,645 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 37 [2023-11-21 22:12:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:34,645 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2023-11-21 22:12:34,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-21 22:12:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2023-11-21 22:12:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 22:12:34,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:34,646 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:34,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:34,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:34,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:34,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 406296643, now seen corresponding path program 1 times [2023-11-21 22:12:34,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:34,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841812384] [2023-11-21 22:12:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:34,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:34,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:34,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074809804] [2023-11-21 22:12:34,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:34,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:34,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:34,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:34,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:12:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:34,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:12:34,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:12:35,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:35,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841812384] [2023-11-21 22:12:35,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074809804] [2023-11-21 22:12:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074809804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:35,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351608468] [2023-11-21 22:12:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:35,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:35,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:35,038 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-21 22:12:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:35,101 INFO L93 Difference]: Finished difference Result 191 states and 228 transitions. [2023-11-21 22:12:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:12:35,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2023-11-21 22:12:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:35,104 INFO L225 Difference]: With dead ends: 191 [2023-11-21 22:12:35,104 INFO L226 Difference]: Without dead ends: 134 [2023-11-21 22:12:35,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:35,106 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:35,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:12:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-21 22:12:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 123. [2023-11-21 22:12:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 94 states have internal predecessors, (111), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-21 22:12:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2023-11-21 22:12:35,128 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 41 [2023-11-21 22:12:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:35,129 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2023-11-21 22:12:35,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-21 22:12:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2023-11-21 22:12:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 22:12:35,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:35,130 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:35,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:12:35,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:35,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 406397931, now seen corresponding path program 1 times [2023-11-21 22:12:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365739887] [2023-11-21 22:12:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:35,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143269071] [2023-11-21 22:12:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:35,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:35,385 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:35,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:12:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:35,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:12:35,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:35,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:12:35,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365739887] [2023-11-21 22:12:35,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143269071] [2023-11-21 22:12:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143269071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:35,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:35,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-21 22:12:35,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241398630] [2023-11-21 22:12:35,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:35,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:12:35,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:12:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:12:35,695 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-21 22:12:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:36,086 INFO L93 Difference]: Finished difference Result 163 states and 194 transitions. [2023-11-21 22:12:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-21 22:12:36,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 41 [2023-11-21 22:12:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:36,090 INFO L225 Difference]: With dead ends: 163 [2023-11-21 22:12:36,090 INFO L226 Difference]: Without dead ends: 162 [2023-11-21 22:12:36,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:12:36,094 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 95 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:36,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 182 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:12:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-21 22:12:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2023-11-21 22:12:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 112 states have internal predecessors, (135), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:12:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2023-11-21 22:12:36,118 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 41 [2023-11-21 22:12:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:36,118 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2023-11-21 22:12:36,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-21 22:12:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2023-11-21 22:12:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:12:36,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:36,121 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:36,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 22:12:36,336 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:36,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1309226844, now seen corresponding path program 1 times [2023-11-21 22:12:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447234908] [2023-11-21 22:12:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:36,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386143034] [2023-11-21 22:12:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:36,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:36,351 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:36,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:12:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:36,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:12:36,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:36,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:12:36,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:36,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447234908] [2023-11-21 22:12:36,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:36,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386143034] [2023-11-21 22:12:36,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386143034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:36,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-21 22:12:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553995224] [2023-11-21 22:12:36,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 22:12:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 22:12:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:12:36,673 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-21 22:12:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:37,085 INFO L93 Difference]: Finished difference Result 308 states and 368 transitions. [2023-11-21 22:12:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-21 22:12:37,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 45 [2023-11-21 22:12:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:37,092 INFO L225 Difference]: With dead ends: 308 [2023-11-21 22:12:37,092 INFO L226 Difference]: Without dead ends: 209 [2023-11-21 22:12:37,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-21 22:12:37,095 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 62 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:37,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 243 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:12:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-21 22:12:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-11-21 22:12:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 152 states have internal predecessors, (178), 26 states have call successors, (26), 20 states have call predecessors, (26), 20 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-21 22:12:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 230 transitions. [2023-11-21 22:12:37,125 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 230 transitions. Word has length 45 [2023-11-21 22:12:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:37,126 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 230 transitions. [2023-11-21 22:12:37,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-21 22:12:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 230 transitions. [2023-11-21 22:12:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 22:12:37,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:37,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:37,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:37,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 22:12:37,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:37,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2142934804, now seen corresponding path program 1 times [2023-11-21 22:12:37,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:37,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890402003] [2023-11-21 22:12:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:37,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:37,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:37,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792406485] [2023-11-21 22:12:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:37,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:37,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:37,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:12:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:37,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:12:37,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:37,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-21 22:12:37,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:37,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890402003] [2023-11-21 22:12:37,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792406485] [2023-11-21 22:12:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792406485] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:37,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:37,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-21 22:12:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980699559] [2023-11-21 22:12:37,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:37,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 22:12:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:12:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:12:37,732 INFO L87 Difference]: Start difference. First operand 199 states and 230 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-21 22:12:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:38,250 INFO L93 Difference]: Finished difference Result 255 states and 295 transitions. [2023-11-21 22:12:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-21 22:12:38,251 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 49 [2023-11-21 22:12:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:38,254 INFO L225 Difference]: With dead ends: 255 [2023-11-21 22:12:38,254 INFO L226 Difference]: Without dead ends: 253 [2023-11-21 22:12:38,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2023-11-21 22:12:38,257 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 92 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:38,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 244 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:12:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-21 22:12:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 235. [2023-11-21 22:12:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 178 states have (on average 1.1910112359550562) internal successors, (212), 180 states have internal predecessors, (212), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-21 22:12:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 272 transitions. [2023-11-21 22:12:38,286 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 272 transitions. Word has length 49 [2023-11-21 22:12:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:38,288 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 272 transitions. [2023-11-21 22:12:38,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-21 22:12:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 272 transitions. [2023-11-21 22:12:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 22:12:38,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:38,289 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:38,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:12:38,508 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:38,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash 3003121, now seen corresponding path program 1 times [2023-11-21 22:12:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295593003] [2023-11-21 22:12:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:38,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:38,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836030450] [2023-11-21 22:12:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:38,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:38,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:38,531 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:38,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 22:12:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:38,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:12:38,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:38,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 22:12:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295593003] [2023-11-21 22:12:38,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836030450] [2023-11-21 22:12:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836030450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:38,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-21 22:12:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213695585] [2023-11-21 22:12:38,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:12:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:38,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:12:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:12:38,986 INFO L87 Difference]: Start difference. First operand 235 states and 272 transitions. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:12:39,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:39,670 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2023-11-21 22:12:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-21 22:12:39,670 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 57 [2023-11-21 22:12:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:39,673 INFO L225 Difference]: With dead ends: 295 [2023-11-21 22:12:39,673 INFO L226 Difference]: Without dead ends: 293 [2023-11-21 22:12:39,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1931, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 22:12:39,676 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 179 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:39,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 262 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:12:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-21 22:12:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 240. [2023-11-21 22:12:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 183 states have internal predecessors, (217), 31 states have call successors, (31), 25 states have call predecessors, (31), 25 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-21 22:12:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 279 transitions. [2023-11-21 22:12:39,706 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 279 transitions. Word has length 57 [2023-11-21 22:12:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:39,707 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 279 transitions. [2023-11-21 22:12:39,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:12:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 279 transitions. [2023-11-21 22:12:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 22:12:39,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:39,708 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:39,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:39,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 22:12:39,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:39,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:39,917 INFO L85 PathProgramCache]: Analyzing trace with hash 112331837, now seen corresponding path program 1 times [2023-11-21 22:12:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:39,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102363037] [2023-11-21 22:12:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:39,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149475875] [2023-11-21 22:12:39,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:39,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:39,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:39,932 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:39,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 22:12:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:40,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:12:40,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:40,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 22:12:40,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:40,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102363037] [2023-11-21 22:12:40,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:40,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149475875] [2023-11-21 22:12:40,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149475875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:40,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:40,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-21 22:12:40,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076399320] [2023-11-21 22:12:40,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:40,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:12:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:12:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:12:40,401 INFO L87 Difference]: Start difference. First operand 240 states and 279 transitions. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:12:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:41,027 INFO L93 Difference]: Finished difference Result 339 states and 399 transitions. [2023-11-21 22:12:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-21 22:12:41,028 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 57 [2023-11-21 22:12:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:41,033 INFO L225 Difference]: With dead ends: 339 [2023-11-21 22:12:41,033 INFO L226 Difference]: Without dead ends: 337 [2023-11-21 22:12:41,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=562, Invalid=2090, Unknown=0, NotChecked=0, Total=2652 [2023-11-21 22:12:41,038 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 145 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:41,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 186 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:12:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-21 22:12:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 307. [2023-11-21 22:12:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 232 states have (on average 1.2241379310344827) internal successors, (284), 234 states have internal predecessors, (284), 39 states have call successors, (39), 33 states have call predecessors, (39), 33 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-21 22:12:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 362 transitions. [2023-11-21 22:12:41,081 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 362 transitions. Word has length 57 [2023-11-21 22:12:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:41,082 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 362 transitions. [2023-11-21 22:12:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-21 22:12:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 362 transitions. [2023-11-21 22:12:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 22:12:41,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:41,085 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:41,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:41,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:12:41,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:41,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash 173123246, now seen corresponding path program 1 times [2023-11-21 22:12:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358908618] [2023-11-21 22:12:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:41,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:41,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:41,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293526964] [2023-11-21 22:12:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:41,317 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:41,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 22:12:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:41,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:12:41,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:41,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 22:12:41,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:41,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358908618] [2023-11-21 22:12:41,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:41,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293526964] [2023-11-21 22:12:41,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293526964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:41,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:41,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-11-21 22:12:41,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509938163] [2023-11-21 22:12:41,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:41,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:12:41,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:12:41,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:12:41,778 INFO L87 Difference]: Start difference. First operand 307 states and 362 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-21 22:12:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:42,443 INFO L93 Difference]: Finished difference Result 659 states and 789 transitions. [2023-11-21 22:12:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-21 22:12:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 61 [2023-11-21 22:12:42,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:42,448 INFO L225 Difference]: With dead ends: 659 [2023-11-21 22:12:42,449 INFO L226 Difference]: Without dead ends: 464 [2023-11-21 22:12:42,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=627, Invalid=2453, Unknown=0, NotChecked=0, Total=3080 [2023-11-21 22:12:42,452 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 139 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:42,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 279 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:12:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-21 22:12:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 407. [2023-11-21 22:12:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 308 states have (on average 1.2077922077922079) internal successors, (372), 310 states have internal predecessors, (372), 51 states have call successors, (51), 45 states have call predecessors, (51), 45 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-21 22:12:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 474 transitions. [2023-11-21 22:12:42,501 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 474 transitions. Word has length 61 [2023-11-21 22:12:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:42,502 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 474 transitions. [2023-11-21 22:12:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-21 22:12:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 474 transitions. [2023-11-21 22:12:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-21 22:12:42,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:42,505 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:42,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:12:42,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:42,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1982436495, now seen corresponding path program 1 times [2023-11-21 22:12:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593291404] [2023-11-21 22:12:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:42,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150745622] [2023-11-21 22:12:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:42,748 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:42,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-21 22:12:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:42,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:12:42,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 3 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:43,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-21 22:12:43,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593291404] [2023-11-21 22:12:43,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150745622] [2023-11-21 22:12:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150745622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:43,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-21 22:12:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894066485] [2023-11-21 22:12:43,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:43,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:12:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:12:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:12:43,388 INFO L87 Difference]: Start difference. First operand 407 states and 474 transitions. Second operand has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-21 22:12:44,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:44,435 INFO L93 Difference]: Finished difference Result 544 states and 634 transitions. [2023-11-21 22:12:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-21 22:12:44,436 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 73 [2023-11-21 22:12:44,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:44,440 INFO L225 Difference]: With dead ends: 544 [2023-11-21 22:12:44,440 INFO L226 Difference]: Without dead ends: 542 [2023-11-21 22:12:44,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=969, Invalid=3861, Unknown=0, NotChecked=0, Total=4830 [2023-11-21 22:12:44,443 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 233 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:44,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 276 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:12:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-11-21 22:12:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 382. [2023-11-21 22:12:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 289 states have (on average 1.2006920415224913) internal successors, (347), 292 states have internal predecessors, (347), 48 states have call successors, (48), 42 states have call predecessors, (48), 42 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-21 22:12:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 443 transitions. [2023-11-21 22:12:44,491 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 443 transitions. Word has length 73 [2023-11-21 22:12:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:44,491 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 443 transitions. [2023-11-21 22:12:44,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-21 22:12:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 443 transitions. [2023-11-21 22:12:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-21 22:12:44,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:44,494 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:44,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:44,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 22:12:44,712 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:44,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -859667225, now seen corresponding path program 2 times [2023-11-21 22:12:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808430551] [2023-11-21 22:12:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:44,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:44,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842240979] [2023-11-21 22:12:44,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:44,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:44,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:44,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:44,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-21 22:12:44,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:44,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:44,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:12:44,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 3 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:45,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-21 22:12:45,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:45,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808430551] [2023-11-21 22:12:45,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:45,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842240979] [2023-11-21 22:12:45,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842240979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:45,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:45,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-21 22:12:45,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497016461] [2023-11-21 22:12:45,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:12:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:12:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:12:45,460 INFO L87 Difference]: Start difference. First operand 382 states and 443 transitions. Second operand has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-21 22:12:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:46,481 INFO L93 Difference]: Finished difference Result 507 states and 592 transitions. [2023-11-21 22:12:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-21 22:12:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 73 [2023-11-21 22:12:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:46,487 INFO L225 Difference]: With dead ends: 507 [2023-11-21 22:12:46,487 INFO L226 Difference]: Without dead ends: 504 [2023-11-21 22:12:46,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1011, Invalid=3819, Unknown=0, NotChecked=0, Total=4830 [2023-11-21 22:12:46,491 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 250 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:46,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 274 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:12:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-11-21 22:12:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 414. [2023-11-21 22:12:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 313 states have (on average 1.2108626198083068) internal successors, (379), 316 states have internal predecessors, (379), 52 states have call successors, (52), 46 states have call predecessors, (52), 46 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-21 22:12:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 483 transitions. [2023-11-21 22:12:46,537 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 483 transitions. Word has length 73 [2023-11-21 22:12:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:46,537 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 483 transitions. [2023-11-21 22:12:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-21 22:12:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 483 transitions. [2023-11-21 22:12:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-21 22:12:46,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:46,541 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:46,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:46,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 22:12:46,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:46,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash -636427326, now seen corresponding path program 2 times [2023-11-21 22:12:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491688496] [2023-11-21 22:12:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:46,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:46,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166903822] [2023-11-21 22:12:46,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:46,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:46,776 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:46,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-21 22:12:46,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:46,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:46,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:12:46,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:47,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-21 22:12:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491688496] [2023-11-21 22:12:47,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166903822] [2023-11-21 22:12:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166903822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:47,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 37 [2023-11-21 22:12:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685878551] [2023-11-21 22:12:47,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:47,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-21 22:12:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-21 22:12:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-21 22:12:47,598 INFO L87 Difference]: Start difference. First operand 414 states and 483 transitions. Second operand has 38 states, 37 states have (on average 2.72972972972973) internal successors, (101), 38 states have internal predecessors, (101), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-21 22:12:48,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:48,752 INFO L93 Difference]: Finished difference Result 887 states and 1058 transitions. [2023-11-21 22:12:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-21 22:12:48,753 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.72972972972973) internal successors, (101), 38 states have internal predecessors, (101), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) Word has length 81 [2023-11-21 22:12:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:48,757 INFO L225 Difference]: With dead ends: 887 [2023-11-21 22:12:48,758 INFO L226 Difference]: Without dead ends: 677 [2023-11-21 22:12:48,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1395, Invalid=5411, Unknown=0, NotChecked=0, Total=6806 [2023-11-21 22:12:48,762 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 240 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:48,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 280 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:12:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-11-21 22:12:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 566. [2023-11-21 22:12:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 425 states have (on average 1.2305882352941175) internal successors, (523), 428 states have internal predecessors, (523), 72 states have call successors, (72), 66 states have call predecessors, (72), 66 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-21 22:12:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 667 transitions. [2023-11-21 22:12:48,829 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 667 transitions. Word has length 81 [2023-11-21 22:12:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 667 transitions. [2023-11-21 22:12:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.72972972972973) internal successors, (101), 38 states have internal predecessors, (101), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-21 22:12:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 667 transitions. [2023-11-21 22:12:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 22:12:48,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:48,836 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:48,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:49,061 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:49,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2036954281, now seen corresponding path program 2 times [2023-11-21 22:12:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:49,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684245566] [2023-11-21 22:12:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:49,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:49,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426162557] [2023-11-21 22:12:49,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:49,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:49,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:49,075 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:49,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-21 22:12:49,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:49,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:49,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:12:49,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 3 proven. 130 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:49,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 3 proven. 74 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-21 22:12:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684245566] [2023-11-21 22:12:49,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426162557] [2023-11-21 22:12:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426162557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:49,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-11-21 22:12:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109725795] [2023-11-21 22:12:49,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-21 22:12:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-21 22:12:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-21 22:12:49,858 INFO L87 Difference]: Start difference. First operand 566 states and 667 transitions. Second operand has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-21 22:12:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:51,098 INFO L93 Difference]: Finished difference Result 1123 states and 1342 transitions. [2023-11-21 22:12:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-21 22:12:51,099 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) Word has length 85 [2023-11-21 22:12:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:51,105 INFO L225 Difference]: With dead ends: 1123 [2023-11-21 22:12:51,105 INFO L226 Difference]: Without dead ends: 889 [2023-11-21 22:12:51,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1445, Invalid=5695, Unknown=0, NotChecked=0, Total=7140 [2023-11-21 22:12:51,110 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 285 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:51,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 365 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:12:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-11-21 22:12:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 766. [2023-11-21 22:12:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 577 states have (on average 1.2062391681109186) internal successors, (696), 580 states have internal predecessors, (696), 96 states have call successors, (96), 90 states have call predecessors, (96), 90 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-21 22:12:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 888 transitions. [2023-11-21 22:12:51,221 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 888 transitions. Word has length 85 [2023-11-21 22:12:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:51,221 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 888 transitions. [2023-11-21 22:12:51,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-21 22:12:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 888 transitions. [2023-11-21 22:12:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:12:51,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:51,224 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:51,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:51,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:51,444 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:51,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash 153507175, now seen corresponding path program 2 times [2023-11-21 22:12:51,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373170485] [2023-11-21 22:12:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:51,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:51,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:51,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658489635] [2023-11-21 22:12:51,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:51,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:51,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:51,466 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:51,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-21 22:12:51,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:51,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:51,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:12:51,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 168 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:51,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 96 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-21 22:12:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373170485] [2023-11-21 22:12:52,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658489635] [2023-11-21 22:12:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658489635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:52,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-11-21 22:12:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192415653] [2023-11-21 22:12:52,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-21 22:12:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-21 22:12:52,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2023-11-21 22:12:52,257 INFO L87 Difference]: Start difference. First operand 766 states and 888 transitions. Second operand has 40 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 40 states have internal predecessors, (107), 19 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-21 22:12:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:53,648 INFO L93 Difference]: Finished difference Result 988 states and 1147 transitions. [2023-11-21 22:12:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-21 22:12:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 40 states have internal predecessors, (107), 19 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) Word has length 89 [2023-11-21 22:12:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:53,660 INFO L225 Difference]: With dead ends: 988 [2023-11-21 22:12:53,660 INFO L226 Difference]: Without dead ends: 985 [2023-11-21 22:12:53,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1611, Invalid=6399, Unknown=0, NotChecked=0, Total=8010 [2023-11-21 22:12:53,664 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 299 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:53,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 257 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:12:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-11-21 22:12:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 730. [2023-11-21 22:12:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 549 states have (on average 1.2131147540983607) internal successors, (666), 552 states have internal predecessors, (666), 92 states have call successors, (92), 86 states have call predecessors, (92), 86 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-21 22:12:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 850 transitions. [2023-11-21 22:12:53,787 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 850 transitions. Word has length 89 [2023-11-21 22:12:53,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:53,788 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 850 transitions. [2023-11-21 22:12:53,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 40 states have internal predecessors, (107), 19 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-21 22:12:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 850 transitions. [2023-11-21 22:12:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-21 22:12:53,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:53,794 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:53,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:54,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:54,013 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:54,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1353644856, now seen corresponding path program 3 times [2023-11-21 22:12:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644777472] [2023-11-21 22:12:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:54,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:54,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665121916] [2023-11-21 22:12:54,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:12:54,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:54,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:54,038 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:54,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-21 22:12:54,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 22:12:54,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:54,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:12:54,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-21 22:12:54,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:54,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:54,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644777472] [2023-11-21 22:12:54,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665121916] [2023-11-21 22:12:54,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665121916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:54,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:54,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670218190] [2023-11-21 22:12:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:54,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:12:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:12:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:12:54,147 INFO L87 Difference]: Start difference. First operand 730 states and 850 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:12:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:54,298 INFO L93 Difference]: Finished difference Result 748 states and 868 transitions. [2023-11-21 22:12:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:12:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-21 22:12:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:54,304 INFO L225 Difference]: With dead ends: 748 [2023-11-21 22:12:54,304 INFO L226 Difference]: Without dead ends: 747 [2023-11-21 22:12:54,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:12:54,307 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:54,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:54,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-21 22:12:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 702. [2023-11-21 22:12:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 531 states have (on average 1.2109227871939736) internal successors, (643), 534 states have internal predecessors, (643), 87 states have call successors, (87), 81 states have call predecessors, (87), 81 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-21 22:12:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 817 transitions. [2023-11-21 22:12:54,392 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 817 transitions. Word has length 97 [2023-11-21 22:12:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:54,393 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 817 transitions. [2023-11-21 22:12:54,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 22:12:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 817 transitions. [2023-11-21 22:12:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-21 22:12:54,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:54,397 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 8, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:54,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:54,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:54,616 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:54,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 737087933, now seen corresponding path program 2 times [2023-11-21 22:12:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463085765] [2023-11-21 22:12:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:54,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:54,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159253165] [2023-11-21 22:12:54,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:54,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:54,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:54,634 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:54,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-21 22:12:54,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:54,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:54,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:12:54,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 3 proven. 290 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:55,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 3 proven. 200 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-21 22:12:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:55,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463085765] [2023-11-21 22:12:55,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:55,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159253165] [2023-11-21 22:12:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159253165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:55,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:55,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-11-21 22:12:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073788678] [2023-11-21 22:12:55,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-21 22:12:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-21 22:12:55,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=1595, Unknown=0, NotChecked=0, Total=2070 [2023-11-21 22:12:55,725 INFO L87 Difference]: Start difference. First operand 702 states and 817 transitions. Second operand has 46 states, 46 states have (on average 2.782608695652174) internal successors, (128), 46 states have internal predecessors, (128), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-21 22:12:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:57,278 INFO L93 Difference]: Finished difference Result 1244 states and 1466 transitions. [2023-11-21 22:12:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-21 22:12:57,279 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.782608695652174) internal successors, (128), 46 states have internal predecessors, (128), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 101 [2023-11-21 22:12:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:57,286 INFO L225 Difference]: With dead ends: 1244 [2023-11-21 22:12:57,287 INFO L226 Difference]: Without dead ends: 1033 [2023-11-21 22:12:57,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2264, Invalid=7242, Unknown=0, NotChecked=0, Total=9506 [2023-11-21 22:12:57,292 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 288 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 316 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:12:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2023-11-21 22:12:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 878. [2023-11-21 22:12:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 663 states have (on average 1.1930618401206636) internal successors, (791), 666 states have internal predecessors, (791), 109 states have call successors, (109), 103 states have call predecessors, (109), 103 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-21 22:12:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1009 transitions. [2023-11-21 22:12:57,408 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1009 transitions. Word has length 101 [2023-11-21 22:12:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:57,408 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1009 transitions. [2023-11-21 22:12:57,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.782608695652174) internal successors, (128), 46 states have internal predecessors, (128), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-21 22:12:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1009 transitions. [2023-11-21 22:12:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-21 22:12:57,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:57,412 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:57,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:57,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:57,624 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:57,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1445013151, now seen corresponding path program 3 times [2023-11-21 22:12:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987676317] [2023-11-21 22:12:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:57,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214462187] [2023-11-21 22:12:57,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:12:57,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:57,643 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:57,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-21 22:12:57,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 22:12:57,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:57,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:12:57,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-21 22:12:57,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-21 22:12:57,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987676317] [2023-11-21 22:12:57,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214462187] [2023-11-21 22:12:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214462187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:57,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-21 22:12:57,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440181006] [2023-11-21 22:12:57,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:57,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:12:57,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:57,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:12:57,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:12:57,859 INFO L87 Difference]: Start difference. First operand 878 states and 1009 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:12:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:58,113 INFO L93 Difference]: Finished difference Result 913 states and 1047 transitions. [2023-11-21 22:12:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:12:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2023-11-21 22:12:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:58,118 INFO L225 Difference]: With dead ends: 913 [2023-11-21 22:12:58,119 INFO L226 Difference]: Without dead ends: 911 [2023-11-21 22:12:58,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:12:58,120 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:58,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 120 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:12:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-11-21 22:12:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 617. [2023-11-21 22:12:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 462 states have (on average 1.1796536796536796) internal successors, (545), 467 states have internal predecessors, (545), 79 states have call successors, (79), 73 states have call predecessors, (79), 73 states have return successors, (79), 76 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-21 22:12:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 703 transitions. [2023-11-21 22:12:58,212 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 703 transitions. Word has length 101 [2023-11-21 22:12:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:58,213 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 703 transitions. [2023-11-21 22:12:58,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 22:12:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 703 transitions. [2023-11-21 22:12:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-21 22:12:58,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:58,216 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:58,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-21 22:12:58,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:58,432 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:12:58,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:58,433 INFO L85 PathProgramCache]: Analyzing trace with hash 597596863, now seen corresponding path program 2 times [2023-11-21 22:12:58,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:58,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813674295] [2023-11-21 22:12:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:58,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:58,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:12:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350591949] [2023-11-21 22:12:58,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:12:58,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:12:58,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:58,447 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:12:58,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-21 22:12:58,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:12:58,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:12:58,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-21 22:12:58,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:12:59,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:12:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-21 22:12:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813674295] [2023-11-21 22:12:59,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:12:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350591949] [2023-11-21 22:12:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350591949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:12:59,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:12:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 57 [2023-11-21 22:12:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730223558] [2023-11-21 22:12:59,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:12:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-21 22:12:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-21 22:12:59,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2023-11-21 22:12:59,902 INFO L87 Difference]: Start difference. First operand 617 states and 703 transitions. Second operand has 58 states, 57 states have (on average 2.736842105263158) internal successors, (156), 58 states have internal predecessors, (156), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-21 22:13:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:02,040 INFO L93 Difference]: Finished difference Result 982 states and 1148 transitions. [2023-11-21 22:13:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-21 22:13:02,041 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.736842105263158) internal successors, (156), 58 states have internal predecessors, (156), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) Word has length 121 [2023-11-21 22:13:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:02,046 INFO L225 Difference]: With dead ends: 982 [2023-11-21 22:13:02,047 INFO L226 Difference]: Without dead ends: 816 [2023-11-21 22:13:02,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2587 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3662, Invalid=8548, Unknown=0, NotChecked=0, Total=12210 [2023-11-21 22:13:02,050 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 588 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:02,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 317 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:13:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-21 22:13:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 740. [2023-11-21 22:13:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 555 states have (on average 1.1981981981981982) internal successors, (665), 560 states have internal predecessors, (665), 94 states have call successors, (94), 88 states have call predecessors, (94), 88 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-21 22:13:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 853 transitions. [2023-11-21 22:13:02,141 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 853 transitions. Word has length 121 [2023-11-21 22:13:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:02,142 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 853 transitions. [2023-11-21 22:13:02,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.736842105263158) internal successors, (156), 58 states have internal predecessors, (156), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-21 22:13:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 853 transitions. [2023-11-21 22:13:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-21 22:13:02,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:02,146 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:02,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:02,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:02,366 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:13:02,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1348100608, now seen corresponding path program 1 times [2023-11-21 22:13:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:02,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909052620] [2023-11-21 22:13:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:02,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:02,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:02,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403315264] [2023-11-21 22:13:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:02,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:02,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:02,382 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:02,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-21 22:13:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:02,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-21 22:13:02,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:13:02,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:13:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-21 22:13:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909052620] [2023-11-21 22:13:03,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403315264] [2023-11-21 22:13:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403315264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:13:03,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:13:03,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2023-11-21 22:13:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549817626] [2023-11-21 22:13:03,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:13:03,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-21 22:13:03,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-21 22:13:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2703, Unknown=0, NotChecked=0, Total=3540 [2023-11-21 22:13:03,945 INFO L87 Difference]: Start difference. First operand 740 states and 853 transitions. Second operand has 60 states, 59 states have (on average 2.7457627118644066) internal successors, (162), 60 states have internal predecessors, (162), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-21 22:13:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:06,804 INFO L93 Difference]: Finished difference Result 989 states and 1159 transitions. [2023-11-21 22:13:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-11-21 22:13:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.7457627118644066) internal successors, (162), 60 states have internal predecessors, (162), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) Word has length 129 [2023-11-21 22:13:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:06,815 INFO L225 Difference]: With dead ends: 989 [2023-11-21 22:13:06,815 INFO L226 Difference]: Without dead ends: 987 [2023-11-21 22:13:06,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4685, Invalid=15337, Unknown=0, NotChecked=0, Total=20022 [2023-11-21 22:13:06,819 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 591 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:06,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 206 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:13:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-11-21 22:13:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 752. [2023-11-21 22:13:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 565 states have (on average 1.2) internal successors, (678), 570 states have internal predecessors, (678), 95 states have call successors, (95), 89 states have call predecessors, (95), 89 states have return successors, (95), 92 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-21 22:13:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 868 transitions. [2023-11-21 22:13:06,965 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 868 transitions. Word has length 129 [2023-11-21 22:13:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:06,966 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 868 transitions. [2023-11-21 22:13:06,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.7457627118644066) internal successors, (162), 60 states have internal predecessors, (162), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-21 22:13:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 868 transitions. [2023-11-21 22:13:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-21 22:13:06,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:06,971 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 12, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:06,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:07,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:07,184 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:13:07,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 131112689, now seen corresponding path program 1 times [2023-11-21 22:13:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723406709] [2023-11-21 22:13:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:07,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:07,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172108652] [2023-11-21 22:13:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:07,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:07,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:07,203 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:07,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-21 22:13:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:07,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-21 22:13:07,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 3 proven. 650 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:13:07,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:13:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 3 proven. 468 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-21 22:13:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723406709] [2023-11-21 22:13:08,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172108652] [2023-11-21 22:13:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172108652] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:13:08,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:13:08,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 62 [2023-11-21 22:13:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412184314] [2023-11-21 22:13:08,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:13:08,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-21 22:13:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-21 22:13:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=883, Invalid=2899, Unknown=0, NotChecked=0, Total=3782 [2023-11-21 22:13:08,799 INFO L87 Difference]: Start difference. First operand 752 states and 868 transitions. Second operand has 62 states, 62 states have (on average 2.774193548387097) internal successors, (172), 62 states have internal predecessors, (172), 30 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2023-11-21 22:13:11,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:11,369 INFO L93 Difference]: Finished difference Result 1449 states and 1695 transitions. [2023-11-21 22:13:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-11-21 22:13:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.774193548387097) internal successors, (172), 62 states have internal predecessors, (172), 30 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) Word has length 133 [2023-11-21 22:13:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:11,380 INFO L225 Difference]: With dead ends: 1449 [2023-11-21 22:13:11,380 INFO L226 Difference]: Without dead ends: 1168 [2023-11-21 22:13:11,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5784 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4869, Invalid=16593, Unknown=0, NotChecked=0, Total=21462 [2023-11-21 22:13:11,384 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 453 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:11,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 352 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:13:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-11-21 22:13:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1040. [2023-11-21 22:13:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 781 states have (on average 1.1882202304737517) internal successors, (928), 786 states have internal predecessors, (928), 131 states have call successors, (131), 125 states have call predecessors, (131), 125 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-21 22:13:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1190 transitions. [2023-11-21 22:13:11,521 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1190 transitions. Word has length 133 [2023-11-21 22:13:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:11,521 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1190 transitions. [2023-11-21 22:13:11,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.774193548387097) internal successors, (172), 62 states have internal predecessors, (172), 30 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2023-11-21 22:13:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1190 transitions. [2023-11-21 22:13:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-21 22:13:11,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:11,526 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 14, 13, 13, 13, 12, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:11,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-21 22:13:11,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-21 22:13:11,740 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-21 22:13:11,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash 495109493, now seen corresponding path program 1 times [2023-11-21 22:13:11,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:11,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97911546] [2023-11-21 22:13:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:11,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:11,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:13:11,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918851363] [2023-11-21 22:13:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:11,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:11,766 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:11,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440c439b-bf85-4c47-9517-ba43dc357ac2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-21 22:13:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-21 22:13:11,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 14 proven. 804 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:13:12,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:13:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 14 proven. 532 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-11-21 22:13:13,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97911546] [2023-11-21 22:13:13,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:13:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918851363] [2023-11-21 22:13:13,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918851363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:13:13,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:13:13,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 74 [2023-11-21 22:13:13,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966843148] [2023-11-21 22:13:13,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:13:13,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-21 22:13:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-21 22:13:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1165, Invalid=4237, Unknown=0, NotChecked=0, Total=5402 [2023-11-21 22:13:13,865 INFO L87 Difference]: Start difference. First operand 1040 states and 1190 transitions. Second operand has 74 states, 74 states have (on average 2.824324324324324) internal successors, (209), 74 states have internal predecessors, (209), 36 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42)